Hotels still have phones in every room. I suspect the years of nickel and diming the traveling public with high hotel telephone fees, remember $1.00 to call information and for local calls, paid-off. As soon as the public had cell phones that worked, they skipped the hotel phones.
Unfortunately, if the hotels had charged reasonable fees for hotel phones the public would have been just as fast to stop using hotel phones, because the cell phone had a consistent number to respond to.
Sometimes gouging the traveling public doesn’t have automatically harmful marketing consequences.